Mechanical movement.



G. A. ANDERSON.

MECHANICAL MOVEMENT.

APPLICATION FILED JAN. 20, 1909.

Patented. NOV. 23, 1909.

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UNITE sAT PATENT OFFICE.

GEORGE A. AlhlDERSON, OF FARGO, NORTH- DAKOTA.

MECHANICAL MOVEMENT.

Specification armament. Patented Nov-"23. 1909- Application fiIed January'ZO, 1909. Serial No. 473,387.

an improved mechanical movement adapted to convert rotary motion into reciprocatory motion and vice versa.

To the above ends, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

In the accompanying drawings which illustrate the invention, like characters indicate like parts throughout the several views.

' Referring to the drawings: Figure l is a view, in side elevation, with some parts sectioned, showin the improved mechanical movement; an Fig. 2 is an edge elevation of the parts shown in Fig. 1.

The numeral 1 indicates a rotary head having three points or tooth like projections 2, located equidistant from its axis and spaced 120 degrees apart. As shown, this head is carried by a rotary shaft ,3.

The numeral 4 indicates a plunger or bar which is mounted to reciprocate in a guide 5, and preferably is free for slight movement from left toward the ri ht in respect to Fig-.1. At its upper end, t is plunger 4 is provided with a frame or head 6 that is for-med with an approximately elliptical opening 7, the major axis of which, extends longitudinally of said. plunger 4. At its sides and on the line of its minor axis, this elliptical opening or seat 7 is formed with notches 8. Preferably, the frame 6 is made in. two arts, the removable section thereof being rigidly but detachably secured to the main section by screws or bolts '9. The main reason for making the frame 6 in two. parts, is to provide for adjustment by filing of the engaging surfaces of the two sect1ons, to compensate for wear of the surface of the elliptical seat or opening 7. r

The points 2 of the rotary head .1 are adapted to engage, one after the other, with the notches 8 of the elliptical seat 7 and they are so extended orprojected, that when {one point 2 is engaged with two of the notches 8, a'second point can pass into and point will engage with some portionof the elliptical seat 7. This action is illustrated by dotted and full lines in Fig. 1. Assumingthat the head v1 is being positively rotated or driven in the direction of the arrow marked thereon in Fig. 1, it will-be seen that the left hand point 2 has-just passed out of engagement with the left hand in engagementwith the ri ht hand notch 8, so that it will positively old the frame 6 and its-plunger 4, ap roximately to the position shown by dotte linesinFig. 1. When shown by dotted lin'es'in Fig. 1, the right hand point will pass out of engagement with the right hand notch 8, and the left hand point 2 willbe forced into engagement with the left hand notch 8,and thus, will force the said frame 6 downward until it reaches the position shown by full lines in Fig. 1, in which, position the arts again assume the position shown by 1111 lines in Fig. 1, and the said frame is again moved upward. In this way, it is evident, rotation of the head 1 reciprocates the frame 6 and its plunger 4. It is possible by reciprocatory movements of rotary head 1 engage in succession with the other, so that for each complete rotation of the said head 1, the frame fiandits plunger tions, or in other words, will be moved three times upward and three times downward.

It will, of course, be understood, that this mechanical movement may be em loyed generally whereverit may be foun desirable, for converting rotary into reciprocating mo- 19K}.

What I claim is:

1. The combination with a reciprocatory frame having an approximately elliptical seat formed With-side notches located on its minor axis, of a rotary head working within said seat, rovided with three points 10'- ferentially spaced .120 degrees apart, the points of which head are "arrange to move over the elliptical surface of said seat, and

out ofthe opposite notch, 8, and a third .n'otch 8, and the right hand point2 is held' the head -1 is rotated'slightly farther than notches 8, first on one side and then on the to engage in succession with the said side the frame 6, to rotate the head 1 by a reverse action.

It will be observed that the points 2 of the 4' will be given three complete reciprocai cated equidistant fromitsaxis and circum- Q 941,oos

said head will reciprocate said' f ame or vice versa;

2. The combination with a reciprocatory frame having. an approximately elliptical seat formed with side notches located on its minor axis, of a rotary head working within said seat, provided with three points located equidistant from-its axis and circumferento move over the elliptical surface of said seat, and to entially spaced 120 degrees apart, the points notches of said seat, whereby rotation of age in succession with the said side notizhes said seat, whereby rotation of said head l reciprocate said frame or vice versa, and 15 which frameis-made up of two detachably connegted sections, divlded on one of the axes f said elliptical seat.

In testimon whereof I aflix my signature in presence 0 two witnesses.

' GEORGE A. ANDERSON. Witnesses:

Tnos. E..DUNN, H. H. KENNEDY. 

